National marine environmental forecasting Center: the end of the El Nino phenomenon has
Yesterday (May 6), the national marine environmental forecasting Center said the El Ni?o events have come to an end.
Associate Professor Feng Licheng, told reporters the national marine environmental forecasting Center, Equatorial Eastern Pacific sea temperatures for 6 months more than 0.5 degrees, is defined as the El Ni?o event. In accordance with this international standard, this El Nino event from April 2015 to April of this year, altogether lasted 13 months.
In accordance with the monitoring, 2015-2016 El Ni?o event peaked in November last year, reaches the standard of strong El Nino event, then decreases steadily. Through a comprehensive analysis of the evolution of Oceanic and atmospheric circulation, the very strong El Nino event is at the end of April this year. This is since 1951, the third strong El Nino event. In the 66 years, our country has happened 15 times El Ni?o events and 15 La Ni?a event. Very strong El Nino event in 1982-1983, and 1997-1998.
Feng Licheng said 1997-1998 El Ni?o event, from May 97 to May 98, also for 13 months. From looking at the length of time, on the El Ni?o phenomenon and a pretty. 1997-1998 the peak intensity of the El Ni?o phenomenon has reached 31 degrees Celsius, and the this value is 26. Taken together, this time significantly worse than El Ni?o 1997-1998 Ni?o ...
Feng Licheng believes that despite the El Nino phenomenon has ended, but its effects on our climate and environment will continue for some time. In addition, in the summer, the Equatorial Eastern Pacific is in a cold state, likely to fall after the La Nina event.
This year is El and La Ni?a of a into years, is expected to this year summer, Typhoon generated of times more history earlier partial less, storm tide strength also compared low; but to autumn, because new of La Ni?a event in development, Northwest Pacific of sea temperature increased warm, conducive to typhoon of occurred, plus is expected to this year sea level more history earlier partial high, if again overlay astronomical tide, on very has may caused compared strong of storm tide, need ahead of be prevention.
El Nino refers to the Central and Eastern Equatorial Pacific waters continued phenomenon of abnormal high temperature range, whereas seawater of low temperature anomaly is La Nina. La Nina alternates with El Nino occurs, but lower frequency than El Nino. La Nina occurs, characterized by cold winter and hot summer, number of tropical cyclones landing in China more than the perennial, prone to "Southern arid north and flood" phenomenon. (CCTV reporter Zhou Wei)
(Editors: Biao Guo UN832)
2016-05-06 14:30:44
CCTV
国家海洋环境预报中心：本次厄尔尼诺现象已结束
昨天（5月6日），国家海洋环境预报中心宣布：本次厄尔尼诺现象事件已经基本结束。
国家海洋环境预报中心副研究员冯立成告诉记者，赤道中东太平洋的海水温度持续6个月超过0.5度，就定义为一次厄尔尼诺事件。按照这个国际标准，此次的厄尔尼诺事件从2015年4月到今年的4月，一共持续了13个月。
根据监测，2015-2016年的厄尔尼诺事件在去年11月达到峰值，达到了极强厄尔尼诺事件的标准，之后逐步衰减。通过对海洋和大气环流演变的综合分析，本次极强厄尔尼诺事件已在今年4月底结束。这是从1951年以来，第三次超强厄尔尼诺事件。在这66年中，我国共发生了15次厄尔尼诺事件和15次拉尼娜事件。极强厄尔尼诺事件发生在1982-1983年，及1997-1998年。
冯立成分析说，1997-1998年的厄尔尼诺事件，是从97年5月到98年5月，同样是13个月。从时间长度上来看，本次厄尔尼诺现象与上一次相当。1997-1998年的厄尔尼诺现象强度峰值达到了31℃，而此次的这一数值是26℃。综合来看，这一次的厄尔尼诺现象明显不如1997-1998年的厄尔尼诺现象强。
冯立成认为，尽管本次厄尔尼诺现象基本结束了，但对我国的气候和环境的影响将会持续一段时间。此外，在夏季，赤道中东太平洋将处于偏冷状态，秋季后转拉尼娜事件可能性大。
今年是厄尔尼诺和拉尼娜的一个转化年，预计今年夏季，台风生成的次数较历史同期偏少，风暴潮强度也比较低；但到秋季，因为新的拉尼娜事件在发展，西北太平洋的海温增暖，有利于台风的发生，加上预计今年海平面较历史同期偏高，如果再叠加天文大潮，就极有可能引起比较强的风暴潮，需要提前加以防范。
厄尔尼诺是指赤道太平洋中东部的海水温度大范围持续异常偏高的现象，反之，海水温度异常偏低的现象就是拉尼娜。拉尼娜常与厄尔尼诺交替出现，但发生频率要比厄尔尼诺低。拉尼娜出现时，我国多表现为冷冬热夏，登陆我国的热带气旋个数比常年多，容易出现“南旱北涝”的现象。（央视新闻 记者 周伟）
(责任编辑：郭彪 UN832)
2016-05-06 14:30:44
央视网